<?php 
namespace Framework;
use PDO;

class Database{
    public $conn;
    /**
     * Database 类构造器
     * 
     * @param array $config
     */

     public function __construct($config) {
        $dsn = "mysql:host={$config['host']};port={$config['port']};dbname={$config['dbname']}";
        
        $options = [
            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
            PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_OBJ
        ];

        try{
            $this->conn = new PDO($dsn,$config['username'],$config['password'],$options);
            // echo '连接成功！';
        } catch (\PDOException $e){
            throw new \Exception("数据库连接失败:{$e->getMessage()}");
        }
     }

     public function query($query,$params = []) {
        try {
            $sth = $this->conn->prepare($query);

            foreach($params as $param =>$value) {
                $sth->bindValue(':' . $param ,$value);
            }
            $sth->execute();
            return $sth;
        } catch (\PDOException $e) {
            throw new \Exception("数据库请求执行失败:{$e->getMessage()}");
        };
     }
     
}

?>